“Last Week Tonight” host John Oliver on Sunday examined the loophole-ridden system that allows sitting presidents to raise private funds for their own presidential library foundations while still in office.

Oliver snarkily decided that “if you can’t beat them, you should probably join them.”

So, he unveiled his own donation.

It was a gigantic pair of bronze testicles inspired by a recording of President Lyndon B. Johnson ordering custom trousers with “extra room where your nuts hang,” that is now in Johnson’s own presidential archive.

“Any presidential library is now welcome to take these balls as a symbol of the massive ego it takes to build one of these libraries in the first place,” said Oliver, who spelled out, though, that he’d “expect something in return.”